Consolidated Statements of Changes in Equity (USD $) In Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income	Noncontrolling Interest
Beginning balance at Oct. 31, 2008	$ 604,478	$ 1,306	$ 334,509	$ (6,778)	$ 190,419	$ 80,510	$ 4,512
Beginning balance, shares at Oct. 31, 2008		130,623
Tax benefit from exercise of stock options	439		439
Stock compensation expense	8,884		8,884
Restricted stock		3	(3)
Restricted stock, shares		310
Employee stock purchase plan, shares		551
Employee stock purchase plan	861	6	855
Stock warrants issued	23,601		23,601
Net loss and other comprehensive income	(174,230)				(192,042)	14,886	2,926
Ending balance at Oct. 31, 2009	464,033	1,315	368,285	(6,778)	(1,623)	95,396	7,438
Ending balance, shares at Oct. 31, 2009		131,484
Exercise of stock options, shares		713
Exercise of stock options	2,737	7	2,730
Stock compensation expense	12,831		12,831
Restricted stock		31	(31)
Restricted stock, shares		3,050
Employee stock purchase plan, shares		509
Employee stock purchase plan	902	5	897
Common stock issued in debt-for-equity exchange, shares		31,111
Common stock issued in debt-for-equity exchange	132,250	311	131,939
Transactions with noncontrolling interest holders	(5,174)		(3,549)				(1,625)
Net loss and other comprehensive income	12,016				(9,684)	18,286	3,414
Ending balance at Oct. 31, 2010	619,595	1,669	513,102	(6,778)	(11,307)	113,682	9,227
Ending balance, shares at Oct. 31, 2010		166,867
Exercise of stock options, shares		756
Exercise of stock options	2,964	8	2,956
Stock compensation expense	14,414		14,414
Restricted stock		1	(1)
Restricted stock, shares		120
Employee stock purchase plan, shares		311
Employee stock purchase plan	1,165	3	1,162
Transactions with noncontrolling interest holders	(91)						(91)
Net loss and other comprehensive income	(15,425)				(21,258)	2,445	3,388
Ending balance at Oct. 31, 2011	$ 622,622	$ 1,681	$ 531,633	$ (6,778)	$ (32,565)	$ 116,127	$ 12,524
Ending balance, shares at Oct. 31, 2011		168,054